Ben Laurie blathering

Before I’m ready to trust ZFS I need to make sure I can replace a disk when it dies. With the setup described here, as a first experiment I removed the primary disk.

So, power down and remove the primary disk (ad4). Note that if you’re doing this on the Proliant system I mentioned, then you really should replace the drive mount (it is needed for cooling). Luckily I have a spare system so I just borrowed one.

Reboot. Comes up fine on the secondary disk without further intervention.

So far, so good. One disk failed, the system came back up without intervention, and would have alerted us in daily mails had we configured it correctly (of course it now is). So what happens if we put the disk back in? Since we’ve modified the other disk in the meantime, we’d hope that would get reconciled. Let’s see…

and there we are, back to where we started. But suppose the disk had really failed, then what? See the next exciting installment!

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on Sunday, March 27th, 2011 at 16:12 and is filed under Open Source.
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